Mods to Primaluna Evo400 preamp

Has anyone modded their Primaluna Evo400 preamp? Or a similar preamp / integrated?

I'm looking for recommendations to tweaks. Does changing the input jacks to higher quality, or swapping capacitors help?

I am enjoying this pre, and have locked into a supply of 12AU7 tubes. I don't see changing it anytime soon. So therefore, it's time to mod!

Finally... if anyone has a circuit diagram, that would be super helpful.

kwhilden05-02-2025 8:56pm

stereo5 Details Discussions Posts This discussion Message User 6,540 posts 05-02-2025 at 08:58pm Copy Comment URL Report Comment Edit Delete I would leave it as is. They already use top quality parts and that is the way it is voiced. If you put in different parts, it will not sound the same.
response34 Details Discussions Posts This discussion Message User 174 posts 05-02-2025 at 09:54pm Copy Comment URL Report Comment Edit Delete I wouldn’t waste the money on “better” connectors. I’m sure they use decent quality pieces on this. You will not notice any difference. The only time I would replace connectors is if they stop providing a good contact. Keep ‘em clean and you’ll be fine. As stereo5 mentioned, changing parts could alter the sound beyond what the designer intended.
kwhilden OP Details Discussions Posts This discussion Message User 3 posts 05-02-2025 at 10:32pm Copy Comment URL Report Comment Edit Delete Changing the sound is the whole entire point of doing mods. I like doing mods to see what change it makes to the sound. It's a lot cheaper than buying new gear LOL. I get that the Prima Luna uses good parts to start, but I'm sure more can be done. So if anyone has any advice on mods they have done to Primaluna gear, please let me know. Thanks!